How to dual boot Windows 10: Complete step-by-step guide

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Setting up a dual boot on your computer with Windows 10 and Linux lets you enjoy the best of both worlds. Whether you need Windows for gaming or running specific programs and Linux for development or privacy, this process can give you easy access to two operating systems on the same machine.

The process may seem complicated at first, but with the right guide and by carefully following the steps, you'll be able to install and configure both operating systems without much trouble. In this article, we explain in detail how to do it correctly.

What is dual boot and why use it?

Dual booting is a configuration that allows you to install and run two operating systems on a single computer. This means that every time you turn on your PC, you can choose which operating system you want to use.

The main reasons to set up a dual boot are:

• Software Compatibility: Some applications are only available for Windows or Linux.
• Security and privacy: Linux is known to be more secure and less prone to viruses.
• Performance: Linux can make better use of system resources compared to Windows.
• Flexibility: You can experiment with Linux without compromising your Windows installation.

Previous requirements

Before you begin installing a dual boot system, make sure you have the following:

• A computer with Windows 10 installed.
• An usb drive at least 8 GB to install Linux.
• Free hard disk space to create a new partition.
• A backup of your important files.
• The ISO image of the Linux distribution you want to install.

How to prepare your computer for dual boot

The first step in this process is to prepare your hard drive to host the new operating system. To do this, you need to shrink the space on the current Windows partition.

To do this, follow these steps:

1. Right-click on the Windows Start menu and select “Disk Management.”
2. Find your main drive (usually C:), right-click on it and select “Shrink Volume.”
3. Enter the size you want to free up (At least 20GB is recommended).
4. Click “Reduce” and wait for the process to complete.

Create a bootable USB with Linux

Now you'll need a USB drive to install Linux on your computer. To do this, use a tool like Rufus.

Step by step:

1. Download the ISO image of the Linux distribution you want.
2. Connect your USB to the computer.
3. Download Rufus and run it.
4. Select your USB and the Linux ISO image.
5. Click “Start” and wait for Rufus to finish creating the bootable USB.

Install Linux alongside Windows

Once you have the USB ready, restart your computer and access the boot menu by pressing F12, ESC or the specific key for your computer.

Select the USB and follow these steps:

1. Boot the system into “Live” mode and test that everything works fine.
2. Run the Linux installer and select the “Install alongside Windows” option.
3. Assign the previously created partition to Linux.
4. setup GRUB (the bootloader) to allow you to select the operating system at startup.
5. Complete the installation and restart your computer.

How to switch between operating systems

Once Linux is installed, every time you turn on your PC a selection menu will appear where you can choose between Windows and Linux.

If this menu does not appear, access the BIOS/UEFI and check the boot order, making sure that GRUB is the default boot manager.

Solution to common problems

Sometimes problems may arise after installation. Here are solutions to the most common ones:

Linux won't boot after installing Windows:

• Windows may have overwritten the GRUB bootloader.
• Solution: Use a Linux Live USB and run the command “sudo update-grub”.

Time is misconfigured between systems:

• This happens because Windows and Linux handle time differently.
• Solution: Configure Linux to use local time with the command “sudo timedatectl set-local-rtc 1”.

Setting up a dual boot system between Windows 10 and Linux might seem daunting at first, but with patience and by following the right steps, it becomes a simple task. Having both operating systems on a single computer will give you incredible flexibility , allowing you to access tools and applications from each platform without having to give up either one.